8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

A large quantity of return fines recycling is a serious shortage of current sinter + BF ironmaking process, which causes big increases in sintering operation cost and pollutant emissions. No Return Fine (BF) Ironmaking Process (NRIP) is conceived to use return fines in BF directly, after removing minus 1 mm part of dust from it. NRIP could make sinter+BF ironmaking process more efficient and environment friendly. The key point of NRIP application is to enhance capacity of BF granular burden acceptance. The methods are supposed to be dust removing control, separately charging of different size of iron ores, optimum burden distribution, gas flow control, sinter RDI control, smart ironmaking,etc. Industrial practices around the world have demonstrated firm basis and the feasibility of NRIP application.